Robust digital controller and its designing device

Details Robust digital controller and its designing device Robust digital controller and its designing device

2005-07-28

2009-11-17

Barnes-Bullock, Crystal J (Department: 2121)

Data processing: generic control systems or specific application

Generic control system, apparatus or process

Optimization or adaptive control

C700S044000, C700S045000, C318S600000, C318S628000

Reexamination Certificate

active

07620462

ABSTRACT:
A robust digital controller is equipped with a high degree of approximation and is able to incorporate a novel two-degree-of-freedom robust digital control system without substantially considering the magnitude of the control inputs and there is provided its designing device. A control compensating means is configured as an integral type control system in which a discrete transfer function Wry(z) between a target value r and a controlled variable y is approximated to a higher-approximate quadratic approximate model transfer function Wm(z) and an arithmetic processing can be performed within the digital controller based on the model transfer function Wm(z). Further, the designing device automatically calculates parameters constituting the control system. Consequently, a robust digital controller can be easily realized that is equipped with a high degree of approximation as compared with a conventional approximate digital control system for realizing a first-order model and is robust against output noises.

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